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Abstract

Arsenic is one of the most harmful pollutants in groundwater. In this paper, the Nepali bio sand filter (BSF) was modi-fied with different bio-adsorbents, and proved to be an efficient method for arsenic removal from groundwater. Three dif-ferent bio-adsorbents were used to modify the Nepali BSF. Iron nails and biochar BSF, ~96% and ~93% arsenic removal was achieved, within the range of WHO guidelines. In iron nails, BSF and biochar BSF ~15 dm3∙h–1 arsenic content water was treated. In the other two BSFs, rice-husk and banana peel were used, the arsenic removal efficiency was ~83% of both BSFs. Furthermore, the efficiency of rice-husk and banana peel BSFs can be increased by increasing the surface area of the adsorbent or by reducing the flow rate.

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Authors and Affiliations

Ghulam S. Keerio
1
Hareef A. Keerio
2
ORCID: ORCID
Khalil A. Ibuphoto
3
Mahmood Laghari
1
Sallahuddin Panhwar
4
Mashooque A. Talpur
5

  1. Sindh Agriculture University, Department of Energy and Environment, Tandojam, Pakistan
  2. Hanyang University, Department of Civil and Environmental Engineering, Seoul, South Korea
  3. Sindh Agriculture University, Department of Farm Structures, Tandojam, Pakistan
  4. Mehran University of Engineering and Technology, US-Pakistan Centers for Advanced Studies in Water, Jamshoro, Pakistan
  5. Sindh Agriculture University, Department of Irrigation and Drainage, Tandojam, Pakistan

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